AWS Organizations

A new detection rule identifies rare instances where an identity performs AWS Organizations or IAM account enumeration APIs for the first time within a specified lookback window, indicative of an attacker attempting to map the AWS environment after compromising credentials.

An Elastic detection rule identifies when a single AWS identity, using the AWS CLI, performs more than five distinct read-only discovery API calls (such as Describe*, List*, Get*, and Generate*) across various AWS services within a 10-second window, indicating reconnaissance by an adversary using compromised credentials or an exploited EC2 instance to map the AWS infrastructure for potential targets and further exploitation.

An adversary attempting to remove an AWS member account from its AWS Organization via the LeaveOrganization API constitutes a critical defense evasion maneuver, as it strips the account of security controls and centralized monitoring, requiring immediate investigation by detection engineers.

Adversaries or malicious insiders may close an AWS account using the `CloseAccount` API, a highly destructive action that suspends all access for 90 days before permanent termination, leading to data destruction and significant business disruption.

Detects the first-time enumeration of AWS Organizations or IAM accounts by a user, potentially indicating reconnaissance by compromised credentials.